help needed please.

[ray carey]

hi, thanks for looking. i have a etronix pulse transmitter and reciever. its been good up untill now, ive just switched it on and now the throttle stays on. i last used it on tuesday night and it was fine then. what could be causing this problem please? also as im new to this fantastic sport could anyone give me thier setups on all the function on tranny too, thanks,